Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

I go up and I go down.
I go up towards the beautiful sky and down toward the green ground.
I am present tense.
I am past tense too
Children love me.

Who Am I?

In the picture that is attached with this question, you can find a square which comprises of four little squares inside it. Consider this square to be made with matchsticks. You have to remove two matchsticks such that only two squares remain instead of five.How will you do it ?

Can it be possible to build a house that has all its four walls facing towards the South?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

John was gifted a new Hayabusa. He drove x miles at 55mph. Then he drove x+20 miles at 40mps. He drove his bike for 100 minutes. How much distance did he travel?

A kind heart person buy packed food at 3$/packet from United states and sells them at 1$/packet at Africa. After some time he becomes a millionaire.

How come the guy become millionaire ?

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?